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Renesas IP80C88
- Part No.:
- IP80C88
- Manufacturer:
- Renesas
- Category:
- Microprocessors
- Package:
- 40-DIP (0.600", 15.24mm)
- Datasheet:
-
IP80C88.pdf
- Description:
- IC MPU 5MHZ 40DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,583
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Product details
Overview
IP80C88 from Intersil is a static CMOS 8-/16-bit microprocessor with 8-bit external data bus and 16-bit internal architecture, supporting up to 1 MB memory addressing, 24 operand addressing modes, and full software compatibility with 8086/8088/80C86. It operates at DC–5 MHz, features bus-hold circuitry, and targets embedded control systems requiring low-power, TTL-compatible CPU replacement.
For engineers reviewing the IP80C88 datasheet, IP80C88 pinout, IP80C88 application, or IP80C88 equivalent, this page delivers verified electrical specs (ICCOP ≤ 10 mA/MHz, ICCSB ≤ 500 µA), dual-mode operation (Minimum/Maximum), static CMOS timing, and precise pin-level interface behavior for legacy 8088 hardware migration and industrial control design.
Technical Context
The IP80C88 implements a two-unit architecture: Bus Interface Unit (BIU) with 4-byte instruction queue and Execution Unit (EU) with 16-bit ALU and register file. It supports static operation from DC to 5 MHz, eliminating minimum frequency constraints and enabling single-step debug and zero-power halt states.
It offers dual operational modes: Minimum mode (MN/MX = VCC) uses integrated control signals (ALE, DEN, DT/R, IO/M) for simple systems; Maximum mode (MN/MX = GND) relies on external 82C88 bus controller and supports multiprocessor coexistence via RQ/GT0/RQ/GT1 and LOCK protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Clock Frequency | 5 MHz - defines maximum sustained instruction throughput in static CMOS operation |
| Data Bus Width | 8-bit multiplexed AD7–AD0 - reduces PCB trace count vs. 16-bit bus while retaining 16-bit internal processing |
| Address Bus Width | 20-bit (A0–A19) - enables direct linear addressing of 1 MB memory space without paging hardware |
| Power Consumption | ICCOP ≤ 10 mA/MHz - scales linearly with clock speed; ICCSB ≤ 500 µA in standby - enables ultra-low-power idle states |
| Operating Temperature | 0°C to +70°C (CP80C88Z) - validated for commercial-grade industrial control and instrumentation environments |
| Package Type | 40-lead PDIP (Plastic Dual-In-Line) - compatible with through-hole prototyping and legacy socket-based designs |
| Bus Hold Circuitry | Integrated on all inputs - eliminates need for external pull-up resistors on address/data/control lines |
Pinout & Package
IP80C88 is supplied in a 40-lead PDIP package (Package Drawing E40.6), with 0.6-inch body width and standard DIP footprint. Pin 1 is bottom-left corner when notch faces up; pin 40 is top-right.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AD7–AD0 (Pins 9–16) | Multiplexed Address/Data Bus | Time-shared 8-bit path for lower address byte (T1) and data (T2–T4); requires external latch (e.g., 82C82) on ALE edge |
| A8–A15 (Pins 2–8, 39) | Upper Address Bus | Dedicated 8-bit non-multiplexed address output; stable throughout bus cycle - no latching required |
| A16/S3–A19/S6 (Pins 35–38) | Address/Status Multiplex | T1: MSBs of 20-bit address; T2–T4: status bits indicating active segment (Code/Data/Stack/Extra) |
| MN/MX (Pin 33) | Mode Selection Input | VCC = Minimum mode (integrated control); GND = Maximum mode (external 82C88 bus controller required) |
| CLK (Pin 19) | Asymmetric Clock Input | 33% duty cycle - optimized internal timing; supports DC–5 MHz; stoppable for debug or power gating |
| RESET (Pin 21) | Asynchronous Reset Input | Active-HIGH synchronized internally; must remain HIGH ≥4 clocks to initialize CS = F000H, IP = FFF0H for cold start |
| READY (Pin 22) | Input Synchronization Signal | Unsynchronized active-HIGH handshake - extends bus cycles for slow memory/I/O; requires external sync if not from 82C84A |
Key Features
| Feature | Design Value |
|---|---|
| Full software compatibility with 8086/8088/80C86 | Enables drop-in reuse of existing assembly code, BIOS, and DOS-compatible firmware without recompilation |
| Static CMOS architecture | Supports true DC operation, indefinite clock halt, and single-step debugging using only CLK - no external timing constraints |
| Bus-hold circuitry on all inputs | Eliminates external pull-up resistors on AD7–AD0, A8–A15, and control pins - reduces BOM count and layout complexity |
| Dual-mode operation (Minimum/Maximum) | Minimum mode supports standalone 8088-style systems; Maximum mode enables multiprocessor bus arbitration and shared-memory architectures |
| 1 MB linear memory addressing | 20-bit address bus allows flat memory model access without segmentation overhead - simplifies real-mode system design |
Applications
| Industrial PLC Controller | Legacy Test Equipment |
|---|---|
|
Use Scenario: Standalone programmable logic controller executing ladder logic scans with deterministic I/O response. IC Role / Device Role / Timing Role: Central execution unit managing scan cycle timing, discrete I/O mapping, and serial HMI communication. Use Value: Static CMOS operation ensures reliable zero-frequency hold during safety interlock pauses; bus-hold eliminates floating input risk in noisy factory environments. |
Use Scenario: Benchtop oscilloscope or signal generator with embedded firmware controlling analog front-end calibration and display rendering. IC Role / Device Role / Timing Role: Main processor coordinating ADC/DAC transfers, waveform generation, and menu-driven UI updates. Use Value: 5 MHz clock and 1 MB addressing support real-time buffer management for 1024-point FFTs and screen refresh without external memory controllers. |
| Avionics Maintenance Tool | Ruggedized Data Logger |
|
Use Scenario: Portable aircraft subsystem diagnostic tool operating across -55°C to +125°C temperature range in ground support equipment. IC Role / Device Role / Timing Role: Core CPU executing ARINC-429 protocol stack and EEPROM-based fault log management. Use Value: M80C88 variant qualification (-55°C to +125°C) and Pb-free RoHS compliance meet DO-254 airborne hardware requirements. |
Use Scenario: Battery-powered environmental sensor node logging temperature, pressure, and vibration over extended field deployments. IC Role / Device Role / Timing Role: Low-power host controller managing sleep/wake cycles, sensor polling, and SPI flash write operations. Use Value: ICCSB ≤ 500 µA standby current enables multi-year operation on coin-cell batteries; DC operation allows clock gating between samples. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Intel 8088 | NMOS process; higher ICCOP (~20 mA/MHz); no bus-hold; requires minimum clock frequency (~2 MHz) | Lacks static operation and low-power standby; less robust in electrically noisy or battery-constrained systems | Select IP80C88 when migrating legacy 8088 designs to lower power, wider temperature range, or improved noise immunity |
| IP80C86 | 16-bit external data bus (AD15–AD0); identical instruction set and timing; same 5 MHz rating | Requires more PCB traces and wider memory interface; incompatible with 8-bit peripheral buses without glue logic | Choose IP80C88 where 8-bit data path reduces board cost and matches existing 8-bit peripherals (e.g., UARTs, PIOs) |
Compared with Intel 8088, IP80C88 delivers static operation and 50% lower active current; compared with IP80C86, it retains 8-bit bus compatibility while sacrificing no instruction-level performance - making it optimal for cost-sensitive, power-aware 8088-replacement designs.
Availability
IP80C88 is available at Aetrix Electronics and suitable for industrial PLC controllers, legacy test equipment, avionics maintenance tools, and ruggedized data loggers requiring stable component supply and long-term obsolescence management.
Supply support for IP80C88 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Intersil Corporation was a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs, later acquired by Renesas Electronics in 2017.
The IP80C88 belongs to Intersil's CMOS microprocessor family designed for drop-in replacement of NMOS 8088 systems, emphasizing static operation, low power, and industrial temperature resilience.
FAQ
What is the maximum operating frequency of the IP80C88?
The IP80C88 is rated for DC to 5 MHz operation. This maximum frequency is specified under commercial temperature conditions (0°C to +70°C) with VCC = +5V ±10%. The device supports static CMOS operation, meaning it can be halted indefinitely at any clock phase without data loss or reset requirement - a key advantage over NMOS predecessors like the 8088.
Does the IP80C88 require external pull-up resistors on its address/data lines?
No. The IP80C88 integrates bus-hold circuitry on all input pins, including AD7–AD0, A8–A15, and control signals. This eliminates the need for external pull-up resistors to prevent floating inputs - reducing BOM cost, PCB area, and susceptibility to noise in industrial environments. Bus-hold strength is sufficient to maintain valid logic levels during bus float conditions.
How does the IP80C88 differ from the Intel 8088 in terms of power consumption?
The IP80C88 consumes significantly less power than the NMOS-based Intel 8088. Its ICCOP is ≤10 mA/MHz versus ~20 mA/MHz for the 8088, and its standby current (ICCSB) is ≤500 µA - orders of magnitude lower than the 8088's minimum idle draw. This stems from its self-aligned silicon gate CMOS process and static design, enabling true zero-power halt states.
Can the IP80C88 execute the same software as the 8088?
Yes. The IP80C88 provides complete binary-level software compatibility with the Intel 8088, 8086, and 80C86. All instructions, addressing modes, flag behavior, and interrupt vectoring are identical. Firmware, BIOS, and DOS-compatible code developed for the 8088 runs unmodified on the IP80C88 - making it a seamless hardware upgrade path for legacy systems.
What package options are available for the IP80C88?
The IP80C88 is offered in two hermetically sealed and plastic packages: CP80C88Z (40-lead PDIP, Pb-free, 0°C to +70°C) and MD80C88/B (40-lead CERDIP, -55°C to +125°C). The CP80C88Z variant uses matte tin e3 termination and meets IPC/JEDEC J-STD-020 Pb-free reflow standards - suitable for modern lead-free assembly processes.
IP80C88 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-DIP (0.600", 15.24mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Core Processor:
- 80C88
- Number of Cores/Bus Width:
- 1 Core, 16-Bit
- Speed:
- 5MHz
- Co-Processors/DSP:
- -
- RAM Controllers:
- -
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- -
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- 5.0V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 40-PDIP
- Additional Interfaces:
- -
IP80C88 FAQ
1.How can I place an order for IP80C88 through Aetrix?
Please submit a Request for Quotation (RFQ) for IP80C88 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for IP80C88 reliable?
The price and inventory of IP80C88 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IP80C88 is usually 5 days.
3.What payment methods are accepted for IP80C88?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IP80C88 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IP80C88?
IP80C88 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IP80C88 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for IP80C88?
For technical support, including IP80C88 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IP80C88 requirements.
6.How does Aetrix verify that IP80C88 is sourced from the original manufacturer or authorized distributors?
All IP80C88 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IP80C88 meets industry standards.
7.What is the process for return or replacement of IP80C88?
All IP80C88 units undergo pre-shipment inspection (PSI). If there is an issue with IP80C88, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The IP80C88 part is unused and in its original packaging.
Return procedure for IP80C88:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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